Furnace.



N. SCHOEPKO.

FURNACE.

APPLICATION FILED JUNE 3- I917- Patented July 2, 1918.

NIKOLA'US SGHOEPKO, OF CHICAGO, ILLTNOIS.

FURNACE.

Specification of Letters Patent.

Patented July 2, 19l8.

Application filed June 18, 1917. Serial No. 175,524.

To all whom it may concern:

Be it known that I, NIKOLAUS SoHoEPKo, a subject of the Emperor of Austria, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Furnaces, of which the following is aspecification.

My invention relates to furnaces and has for its primary object the provision of an improved construction of smoke walls for furnaces by means of which a substantially complete burning of all smoke and gases generated from the fuel is accomplished through straight fines each traversing two courses of bricks and intersecting two surfaces only of each brick traversed.

A further object of my invention is the provision of a flue construction for smoke walls whereby the bricks through which the fines extend are not substantially weakened but may be used in an arch construction to support a wall above them. 7

Other objects and advantages of my invention will become apparent from the following description taken in conjunction with the accompanying drawings, which form a part of this specification and illustrate the preferred embodiment of my invention.

In the drawings Figure 1 is a vertical section taken substantially on line 11 of Fig. 2;

Fig. 2 is a vertical section taken substantially on line 22 of Fig. 1;

Fig. 3 is a horizontal section taken substantially on line 33 of Fig. 1;

Fig. 4 is a perspective View of one of the arch supporting pieces, shown at the right in Fig. 1, and illustrating the outer end and rear and top sides thereof;

Fig. 5 is a rear view in perspective of the central one of the three arch supporting firebrick, shown in front elevation in Fig. 1;

Fig. 6 is a perspective view of a bracket adapted to engage the end firebrick, such as that illustrated in Fig. 4;

Fig. 7 is a perspective view of an end brick of the upper course inverted; and

Fig. 8 is a perspective view of an inverted fire-brick shaped to cooperate with the brick shown in-Fig. 5.

Reference numeral 10 indicates generally the outer brick wall of a furnace and incloses an inner metal wall 11. The brick of wall 10 also supports an ordinary grate 12. At 13 is shown the fire-box wall of the furnace and at 14 the furnace flues communicating with the interior of the fire-box. The fire-box is spaced from the outer wall of the furnace in the customary manner, as shown in Figs. 1, 2 and 3, and the grate 12 is raised from the ground as usual to permit the accumulation of ashes in the space 15. The interior of the fire-box above the grate is indicated at 16 and a smoke wall is positioned therein, extending from the top of the box to a point suitably distant from the grate 12.

Heretofore various means for supporting the smoke wall 17 have been provided, such, for instance, as an I-beam spanning the firebox transversely and constantly exposed to the fire. The constant action of the fire upon the I-beam, or through exposed metal parts will warp them and cause distortion of the smoke walls. The present invention contemplates a support for the smoke wall, by means of which only fire-bricks are exposed to the action of the flames. To this end applicant provides end fire-bricks 18 and 19, having substantially vertical outer ends and oppositely chamfered inner ends; he also provides a central fire-brick 21 havin its ends chamfered to engage the chamfered ends'of the end bricks 18 and 19, in the manner of a keystone in an arch. The line of bricks 18, 21, and 19 may be slightly chamfered, if desired, but is preferably in horizontal alinement, as illustrated in Figs. 1 and 2. The outer ends of the end pieces 18 and 19 are vertically channeled as at 22 and provided with horizontal cutouts 23 in order that the fire-brick of which they are composed may extend into contact with the wall 13 of the fire-box, and at the same time admit of the use of an arch bracket 24, provided with an arm 25, which engages the cutout 23. Each of the brackets 24 is pierced for engagement by a bolt 26 which secure the brackets to the inner surface of the fire-box wall. In assembling the smoke wall support the brackets 24 are bolted in place, the pieces 18 and 19 respectively fitted thereon, and lastly the key-brick 21 is dropped between the inner ends of the end bricks 18 and 19.

The bricks 18, 19 and 21 are slantingly channeled across their upper rear edges, as at 27 and are adapted to support a course of fire-brick comprising end pieces 28 and intermediate pieces 29 which are oppositely channeled as at 31, the channels 27 and 31 registering opposite each other to form downwardly slanting passageways for smoke and gases through the lower portion of the smoke wall. The end bricks 28 are channeled away in their outer ends as at 32 and 33 to cause them to overlap the upper extremities of the brackets 24, thus permitting the fire-brick of Which they are composed to extend flush with the inner surface of the wall of the fire-box. By the construction above described it will be obvious that the bolts 26 and brackets 24, which are preferably made of metal, are protected from the fire by the fire-bricks 18 and 28 on one side and 19 and 28 on the other side.

As is well known gases constantly collect below the grates of furnaces and, when the coals become dense over the grate, these gases are gradually disseminated into the boiler room, where they injure the health of the operatives. To avoid this and cause combustion of these heavy gases, I provide beneath the grate a pipe 34 having openings 35 and 36 positioned below the grate and communicating with the space 15. The opening 36 is preferably half way from the front of the furnace to the back of the space 15 and the opening 35 is preferably at the rear portion of said space. The end of the pipe, near the front end of the space 15, is turned upwardly, as at 37, and terminates above the grate at a height substantially the thickness of the bed of coals on the grate.

.That portion of the pipe 37 extending above the grate is surrounded by a protector 38 of baked fire-clay secured by any suitable means 39 to the wall of the fire-box, the protector completely covering that portion of the fastening device 39 lying within the firebox. The draft of the furnace constantly draws the heavy gases accumulated below the grate through the openings 35 and 36, and pipes '34; and 37 discharging them into the space 16 of the fire-box, where they are consumed or, if noncombustible, drawn out through the chimney.

lVhile I have illustrated and described the preferred embodiment of my invention it will be apparent that one skilled in the art may make modifications thereof without departing from the principles of the invention. I wish, therefore, not to be restricted to the precise embodiment shown except in so far as the same is limited in the appended claim.

I claim:

A support for the smoke wall of a furnace, comprising a lower course of bricks upheld by the side walls of the furnace, and a second course of bricks directly superposed upon and vertically above said lower course, there being straight smoke passageways formed in said support which intersect only the rear and upper faces of the bricks of the lower course and only the under and forward faces of the bricks of said second course.

In testimony whereof I have afiixed my signature.

NIKOLAUS SCHOEPKO.

Copies of this atent may be obtained for fi've cents each, by addressing the Commissioner of Patents, Washington, D. G. 

